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Titolo:
A METHOD FOR IDENTIFYING SHORT-LATENCY HUMAN COGNITIVE POTENTIALS IN SINGLE TRIALS BY SCALP MAPPING
Autore:
TOMBERG C; DESMEDT JE;
Indirizzi:
FREE UNIV BRUSSELS,FAC MED,BRAIN RES UNIT,20 RUE EVERS B-1000 BRUSSELS BELGIUM
Titolo Testata:
Neuroscience letters
fascicolo: 1-2, volume: 168, anno: 1994,
pagine: 123 - 125
SICI:
0304-3940(1994)168:1-2<123:AMFISH>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOMATOSENSORY EVOKED-POTENTIALS; LATE COMPONENTS; DISCRIMINATION; ATTENTION; TASKS;
Keywords:
COGNITIVE POTENTIAL; BRAIN MAPPING; SELECTIVE ATTENTION; SINGLE TRIAL; ELECTROENCEPHALOGRAM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
C. Tomberg e J.E. Desmedt, "A METHOD FOR IDENTIFYING SHORT-LATENCY HUMAN COGNITIVE POTENTIALS IN SINGLE TRIALS BY SCALP MAPPING", Neuroscience letters, 168(1-2), 1994, pp. 123-125

Abstract

Studies of scalp-recorded brain event-related potentials in humans currently depend on the electronic averaging of many responses to the stimulus. In non-averaged single responses, it is sometimes possible to see late components such as the so-called P300, but not the shorter latency components that are much smaller and masked in background noise. We tried to identify short-latency cognitive potentials evoked by finger stimulation by comparing single trial responses that are concomitantly recorded at the contralateral and ipsilateral parietal scalp respectively. We developed a single trial topographic mapping method that proved important for assessing whether any left-right difference at short latency indeed reflected genuine cognitive electrogeneses. These results make it possible to analyze on a trial-by-trial basis the shortlatency cognitive processing in somatic perception.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 04:09:13